This game pratices number sense by presenting several 'number representations' (fingers, dice, rekenrek) on 'flash cards'. The cards show up in milliseconds (the speed is user controlled) and the user has to guess what number was showed each time. The time of 'flashing' can be established before playing the game.

This game pratices number sense by presenting several 'number representations' (fingers, dice, rekenrek) on 'flash cards'. The cards show up in milliseconds (the speed is user controlled) and the user has to guess what number was showed each time. The time of 'flashing' can be established before playing the game.